There are three times as many eggs in the box as in the basket. There are 96 eggs in a box. How many eggs are there in six baskets?
3. The average speed of a train before the speed increase is 7 1km, and it takes 12 hours from Qinhuangdao to Handan. After speeding up, the average speed is 95 kilometers per hour. How many hours does it take from Qinhuangdao to Handan after speeding up?
Aunt Wang is an expert in making children's clothes. She can make 75 sets of children's clothes a week. Now the working week is five days. (1) According to this calculation, how many sets can 15 make?
(2) How many days does it take to make 120 sets of children's clothes?
The coach from Beijing to Qingdao passes through Tianjin and Jinan. It departs from Beijing at 6: 30 in the morning with an average speed of 85 kilometers per hour. When does it arrive in Qingdao?
137km； From Beijing to Tianjin; 360km from Tianjin to Jinan; Jinan to Qingdao is 393 kilometers.
6. Sunshine Primary School has 960 teachers and students. 60 tons were used in June. (1) How many tons of water does the school use on average every day?
(2) According to this calculation, how many people can use 1 ton of water for one day? How about a month?
7. 125 male students and 1 19 female students were led by three teachers to visit the history museum. During the visit, they can only enter in batches, with a maximum of 50 people allowed at a time. How many batches at least?
8. A story book has 448 pages. Obviously, it took 16 days to read it. Fangfang reads 4 pages more than Mingming every day. How many pages does Fangfang read every day?
9. In order to carry out sports activities, the class pays for playing basketball and volleyball. It is known that it costs 16 1 yuan to buy three basketballs and two volleyballs. If you spend 245 yuan to buy three basketballs and five volleyballs, how much is a basketball? How much is a volleyball?
10, obviously a child who loves to learn. He does some oral arithmetic problems every day except Sunday. If he does 300 sentences a week, according to this calculation,
(1) How many courses can I do in three weeks?
(2)650 questions can be completed in a few days?
1 1. A tit can eat about 800 pests in 5 days. According to this calculation, how many pests can a titmouse eat in a month? A month is 30 days. )
12, a bus travels for 3 hours 174 km. At this speed, how many kilometers can 12 hour travel?
13. Grandpa Zhang bought three lambs and spent 75 yuan. He wants to buy five more lambs. How much will it cost?
14, 5 boxes of bees can brew 375 kilograms of honey a year. Kobayashi keeps 12 boxes of such bees. How many Jin of honey can you brew a year?
15, 180 Young Pioneers from Yu Ying Primary School helped their families to do good deeds on "Love Day". These young pioneers are divided into five teams on average, and each team is divided into four groups. How many young pioneers are there in each group on average?
16, Uncle Liu bought 700 yuan to buy fertilizer, bought 16 bags of fertilizer, and left 60 yuan. What's the price of each bag of fertilizer?
17. Eggs collected in Asian chicken farm on Monday spring, 18kg packed in a box. After 8 cases are packed, there is 16kg left. How many kilograms of eggs were collected on Monday?
18, Uncle Wang drove from the county seat to Wangzhuang to deliver fertilizer. I walked 40 kilometers per hour for three hours when I went there, and only two hours when I came back. How many kilometers per hour did you average when you came back?
19, a tour bus traveled in the plain mountainous area for 2 hours and finally reached the top of the mountain. It is known that tourist buses travel 50 kilometers per hour in plain areas and 30 kilometers per hour in mountainous areas. How long will this trip take?
20. The school should add two new books to the library, each with three sets. It is known that each set of children's encyclopedias 125 yuan, and each set of mathematical conjectures 18 yuan. * * * How much?
Review of Math Application Problems in Grade Four
_ _ _ Class name _ _ _ _ _
First, thinking training.
Li sprayed medicine on 820 apple trees in 4 hours. According to this calculation, how many apple trees can be sprayed in 6 hours?
The solution is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.
Answer:
2. The road team built 529 meters of roads in 4 days, with an average of 55 meters per day. The rest will be finished in 5 days. How many meters will the rest be repaired every day?
Steps to solve the problem: ① First, find _ _ _ _ _ _ _ _ _ _ _ _ _; Answer:
② Find _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
(3) finally, find _ _ _ _ _ _ _ _ _ _.
3. Read a story book in winter and winter, and finish it in five days 180 pages. If this continues for 8 days, how many pages have you read in winter and winter?
Solution 1: first find _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.
The first: _ _ _ _ _ _ _
Solution 2: Find the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
4. The school bought six boxes of pens for Miyoshi students with 600 yuan, each box is 10. How much is the average pen?
Solution 1: first find _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.
Solution 2: Find the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Second, basic training.
1, Zhang Jia has 940 Jin of rice. Packed in a bag every 50 kilograms. How many bags of rice do you need at least?
2. Build a 960m-long canal, which was originally planned to be completed in 24 days. Actually repair 48 meters a day, how many days can you actually finish the task ahead of schedule?
3. Students line up to do exercises. If there are 24 people in each row, you need to stand in 36 rows. If there are 32 people in each row, how many rows do you need to stand?
4, a set of clothing, coat 54 yuan, pants 38 yuan. How much is eight sets of such clothes? ② How many sets of such clothes can 690 yuan buy at most?
5, a bottle of oil, even a bottle of 700 grams, ate half of the oil, even the bottle weighs 450 grams. How much does this oil weigh? How many grams does this bottle weigh?
6. Team A builds roads every day 128m, Team B builds roads every day 236m, Team C builds roads every day 136m and Team D builds roads every day 264m. There is a 500-meter road, which takes one day to complete. Which construction teams are suitable for joint repair?
7. A new teaching building has been built in our school, with 4 floors and 5 classrooms on each floor. Each classroom is equipped with 12 fluorescent lamps. How many fluorescent lamps are installed in this teaching building?
8. 15 Frog 1 hour can eat 480 mosquitoes. According to this calculation, how many frogs can 1 hour 250 eat? If 50 mosquitoes weigh 1 g, how many grams do these mosquitoes weigh?
9. Chunmiao Primary School organizes children to travel together in grades one and two. There are 48 freshmen and 44 sophomores. It is known that a van 17 people and a bus have 35 people. Please help them design a car rental plan.
10, at the gate of the park, Xiao Li parked the car and handed it over to 4 yuan the first hour, and then to 2 yuan every hour; When Xiao Zhang stops, he has to pay 5 yuan the first hour and 3 yuan every hour thereafter. It's all handed in 14 yuan. How many hours did it stop?
10, there are 13 rows of Chinese rose flowers in the school flower bed, each row has 12 plants; It also contains 8 rows of chrysanthemums with 24 plants in each row. How much less are Chinese rose flowers than chrysanthemums?
1 1, Xiao Mahu accidentally wrote the divisor 25 as 52 when calculating, and the result quotient was 6 and the remainder was 40. What is the correct quotient?
13, basketball 80 yuan, volleyball 60 yuan, football 90 yuan.
How much does it cost to buy two basketballs and three footballs? What would you do if I gave you 300 yuan?
14. When Li Jun calculates the division, he writes the divisor 43 as 34, and the result quotient 16 leaves 22. Can you work out the correct result?
15. There are two layers of books on the bookshelf, *** 122. If you take six books from the top and put them on the bottom floor, the number of books on the two floors is the same. How many books are there on the shelves?
16, the distance between a and b 150km. Car A drives from A to B, and after three hours, there is still 15km from B ... How many kilometers does this car travel per hour on average?
17, the sum of two addends is 27 greater than one addend and 72 greater than the other addend. What is the sum and difference of these two addends?
18, there are two piles of chess pieces, 67 in the first pile and 53 in the second pile. How many pieces can you take out from the second pile so that the number of pieces in the first pile is twice that in the second pile?
Second, all-round expansion
1, the sum of two numbers is 957, and the number of digits of an addend is 0. If you delete 0, it is the same as another addend. What are these two numbers?
2. There are 60 more girls than boys, and fewer girls than boys 15. How many boys and girls are there? (Hint: Draw a line graph, maybe it can be solved! )
Grandpa is 70 years old and granddaughter is 10 years old. How old is grandpa the year after next? A few years later, grandpa was five times as old as his granddaughter.
4. When two numbers are divided, the quotient is 23 and the remainder is 12. The sum of dividend and divisor is 396. Ask for a dividend?
5. There is a batch of goods. If five big trucks and two small trucks are used to transport it, or two big trucks and eight small trucks are used to transport it, how many trucks are needed to transport it?
6. Forty-six students from Class Four (1) went boating. There are six boats and four boats *** 10. If they happen to be full (there is no room and everyone has seats), how should they rent a boat?
7. Mr Wang lives on the seventh floor. When he took the elevator downstairs in the morning, he stayed on each floor for 30 seconds. It took 15 seconds for the elevator to descend one floor. How long did it take Mr. Wang to go downstairs by elevator?
8. There are 105 people in two cars. If there are five people on the Jinlong bus and four people on the daewoo motor bus, then the number of people on the two buses is the same. How many people are there in each car?
9. A snail climbs the post, climbs 5 meters every morning to night, and slides down 4 meters at night. According to this climbing method, the snail climbed for 20 days before reaching the top of the column. How high is this post?
10. If it takes 194 yuan to buy 6 boxes of chalk and 3 boxes of crayons, and 126 yuan to buy 2 boxes of chalk and quilt crayons, how much does it cost to buy 8 boxes of chalk and 3 boxes of crayons?
1 1, 8 1 students cross the river to go to school, and there is only one boat by the river that can only carry1/people at most, and there is no boatman. How many times do these students have to cross the river at least? If it takes three minutes for a boat to cross the river at a time, then all students should cross the river.
12, Wang rushed the pig to the market to change rabbits. If a pig can change three sheep and a sheep can change two rabbits. Calculate, how many rabbits can Uncle Wang get back? How much time?
13,41ton of rice should be transported from the warehouse to the workshop. Large trucks can transport 5 tons at a time, and small trucks can transport 3 tons at a time. How to design a transportation plan to minimize the number of transportation times, and each truck can
14. In the subtraction formula, the minuend is added with the subtrahend the difference is 90, and the subtrahend is 15. What is the difference between the minuend and the sum? Full load?
15. This year, my uncle is 2 1 year old and Xiaohua is 5 years old. In a few years, my uncle will be three times as old as Xiaohua.
16. The circumference of the circular garden is 785 meters. If 157 osmanthus trees are planted equidistantly around the garden, how many meters are there between the two trees?
17, Nanjing Yangtze River Bridge is 4570 meters longer than new york Bridge in the United States, and new york Bridge is 530 meters longer than Wuhan Yangtze River Bridge in China. It is known that the length of three bridges is10640m. How long are these three bridges?
18, a small shop, buys 30 tapes at the price of 16 yuan per box, and then sells them at the price of 20 yuan per box. How much can you earn after selling? (Excluding fares, taxes and other expenses, 25 yuan)
19, a multimedia classroom in a school, * * * has 15 rows of seats, and the first row * * * has 20 seats, which is 2 more seats than the front row for each shooting. How many seats are there in this classroom?
20. Teacher Chen is going to give out a box of biscuits to the children in the small class. If each child gets 0 yuan, there are still 20 yuan left. If each child gets 1 1, there are eight less. Do you know how many cookies there are in this box? How many children are there in the small class?
Q:
This is a math problem! It's not an application problem, it's the kind of addition, subtraction, multiplication and division. Do you have it in the fourth grade of primary school?